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I MAHINE FR SIFTING COLORS Y No'. 295,783. Patented Mar. 25, 1884".

M a y 11 7 J f UNITED STATES PATENT @Erica JEALT CHARLES MATTER, OF MLHAUSEN, GERMANY.

MACHINE FOR SIFTING COLORS.

SPECIFICATION forming part of Letters Patent No. 295,783, dated March 25, 1884.`

Application iiled October 22, 1Std. (No model.) Patented To all whom t may concern/.-

Y Be it known that I, J EAN CHARLEs MATTER, of Mlhausen, Germany, have invented an Improved Machine for Sifting Colors, of which the following is a specication.

The machine for sifting colors forming the object of this invention is chiefly designed to effect, automatically, the operation of sifting colors, which up to the present time has been performed by hand. The sifting by hand being along and accordingly expensive process, `requiring tedious and in most cases unwholesome work, it lhas been for a length of time the aimof many attempts to substitute for the same the action of machinery, which is well known to be more efficient than hand-work. Yet, while the principal devices hitherto used for the purpose-,such as the apparatus for sifting fia cac-uo and the press-have attained action of the brush moved by hand; they re main in the sieve, and the work done is incomplete. On the other hand, the operation effected by hand, expensive as it is in itself, be-

comes still more so by reason of the necessity of a frequent replacement of the sieve, which soon gets unserviceable under the uneven action of the strokes of the brushes produced by the operative. Now, the machine embodying my invention presentsthe combined advantages ofeconomy such as is realized by automatical work, and of the perfection obtained by manual labor, preventing, however, the drawbacks inherentto all the methods now in use, such as the sifting naamw or by means of a piston. It moreover materially lessens the wear and injury of the sieves by reason of the uniformity and elasticity of the pressure `exerted upon the sieve by the brush.

My invention substantially consists in the construction of the machine, as hereinafter de` scribed, and more particularly recited in the claims.

in England September 25, 1883, No. 4,570, andinFrance October 8, 1883: No. 145 2T.

The construction and operation of this machine Will be clearly understood on reference being had to the accompanying drawings, in which Figure 1 is an elevation, and Fig. 2 a plan, of my improved machine.

I generallyconstruct the same double-that is to say, that one driving-shaft operates two sieves at a time. l

In the drawings, A represents the drivingshaft, providedwith fast and loose pulleys l? P', by means of which and bevel-wheels a a revolution is communicated to two vertical shafts, B B. At the end of each of `these shafts I iir. a crank, O `or O. Onto these cranks a connecting-rod, D, is placed, said cranks communicating to the ends of the rod a circular motion corresponding to the circular movement of the crank-pins.

E E represent spindles, each carrying a brush at its lower end and extending upward through a ring, c or c', on the lrespective ends of the connecting-rod. AThe upper ends of the spindles E E( are swiveled, respectively, to

rods G G', and these rods are arranged to swing in vertical planes from the centers b b. The connecting-rod, therefore, under th-e movement imparted to it from the cranks, imparts to the brushes a revolving swinging -movement. The counter-weights H H are applied to the rods G G', by which the pressure of the brushes upon the sieves may be regulated. The sieves each rest upon a toothed ring, I, which is arranged for rotation around its own axis. On each of the vertical shafts is a pinion, d, which, through an intermediate pinion, d, communicates rotation to the ringand the sieve thereon, but in the opposite direction, to the rotation imparted to the brush.

This construction of machine presents the advantages hereinbefore specified-to wit, continuity and regularity of work under uniform pressure. Y

I have illustrated the sieves as a pair, and this arrangement I prefer; but one of the sieves may be omitted.

What I claim is- 1. The combination of a sieve arranged for rotation ina horizontal plane, a spindle, E, carrying a brush within the sieve, the said spindle being suitably swiveled, and mechan- IOO ism, substantially such as described, for communicating rotation tothe sieve in one direction and rotation to the brush in the opposite direction, substantially as described.

2. The combination of two sieves arranged for rotation in a horizontal plane, mechanism, substantially such as described, for imparting such rotation to said sieves, the two cranks C C', thegrod D, connecting said cranks and extending over the sieves, and carrying at its eXtreme ends the rings c c', the brush-spindles E E', carrying brushes at their lower ends, ex-

tendineP n throu h said rings c c and sus-l an p g c 7 pended at their upper ends by swivel-joints, substantially as described.

In testimony whereof I have signed my name to this specification before two subscribing witnesses. v

JEAN CHARLES MATTER.

Vitnesses:

PAUL DUPONT,

E. FLUCK. 

